上市公司内部人亲属股票交易行为研究

中国的《证券法》等法律法规禁止内部人短线交易,并设置了内部人禁止股票买卖的敏感期,但内部人亲属不受此限制。本文对深圳证券交易所2007年5月至2010年5月的内部人亲属股票交易数据分析发现:(1)上市公司的内部人亲属对内部人任职企业的股票交易次数已经远远多于内部人自身的交易次数;(2)内部人亲属的交易存在很多的短线交易行为与敏感期交易行为;(3)内部人亲属股票交易整体而言能够获得超额收益;(4)短线交易与敏感期交易有助于内部人亲属获得超额收益;(5)董事长或总经理的亲属获得的收益比其他内部人亲属更高。据此,本文认为证券交易监管机构需要关注内部人亲属股票交易行为,尤其警惕内部人亲属交易可能成为规避内部人交易管制的替代方式。     

The power of the pen and executive compensation

We examine the press’ role in monitoring and influencing executive compensation practice using more than 11,000 press articles about CEO compensation from 1994 to 2002. Negative press coverage is more strongly related to excess annual pay than to raw annual pay, suggesting a sophisticated approach by the media in selecting CEOs to cover. However, negative coverage is also greater for CEOs with more option exercises, suggesting the press engages in some degree of “sensationalism.” We find little evidence that firms respond to negative press coverage by decreasing excess CEO compensation or increasing CEO turnover.     

Reputation penalties for poor monitoring of executive pay: Evidence from option backdating

We study whether outside directors are held accountable for poor monitoring of executive compensation by examining the reputation penalties to directors of firms involved in the option backdating (BD) scandal of 2006–2007. We find that, at firms involved in BD, significant penalties accrued to compensation committee members (particularly those who served during the BD period) both in terms of votes withheld when up for election and in terms of turnover, especially in more severe cases of BD. However, directors of BD firms did not suffer similar penalties at non-BD firms, raising the question of whether reputation penalties for poor oversight of executive pay are large enough to affect the ex ante incentives of directors.     

我国证券市场内幕交易的法学实证分析——来自31起内幕交易成案的统计分析

内幕交易是证券法学界炙手可热、经久不衰的热门课题,关于内幕交易的各种概念、学说、理论被学术界翻炒得烂熟,解剖个案麻雀的精彩论著也不鲜见,但受制于案例、资料和相关数据的局限,少有学者从实证角度,系统性地研究我国内幕交易成案的总体特征。本文力图在传统证券法学研究途径之外,独辟蹊径,通过运用统计、数量分析等经济学科工具,对证券市场成立以来查处的全部31起内幕交易案件加以实证分析,以期得出我国内幕交易案件的发案特征与规律,为打击和防范内幕交易违法行为,修订内幕交易法制提供数据支持和实证参考。     

Mutual funds as monitors: Evidence from mutual fund voting

We address how mutual funds vote on shareholder proposals and identify factors that help determine support of wealth-increasing shareholder proposals. We examine 213,579 voting decisions made by 1799 mutual funds from 94 fund families for 1047 shareholder proposals voted on between July 2003 and June 2005. In an analysis of voting across funds within the same fund family, we find significant divergence in voting within families, emphasizing the importance of focusing on voting by individual funds. We also find that, in general, mutual funds vote more affirmatively for potentially wealth-increasing proposals and funds' voting approval rates for these beneficial resolutions are significantly higher than those of other investors. Our results suggest that funds tend to support proposals targeting firms with weaker governance. We also find that funds with lower turnover ratios and social funds are more likely to support shareholder proposals. Finally, fund voting approval rates significantly impact whether a proposal passes and whether one is implemented.     

Accountability of independent directors: Evidence from firms subject to securities litigation

We examine which independent directors are held accountable when investors sue firms for financial and disclosure-related fraud. Investors can name independent directors as defendants in lawsuits, and they can vote against their reelection to express displeasure over the directors’ ineffectiveness at monitoring managers. In a sample of securities class action lawsuits from 1996 to 2010, about 11% of independent directors are named as defendants. The likelihood of being named is greater for audit committee members and directors who sell stock during the class period. Named directors receive more negative recommendations from Institutional Shareholder Services, a proxy advisory firm, and significantly more negative votes from shareholders than directors in a benchmark sample. They are also more likely than other independent directors to leave sued firms. Overall, shareholders use litigation along with director elections and director retention to hold some independent directors more accountable than others when firms experience financial fraud.     

Earnings Management in IPO Lockup and Insider Trading: Evidence from Taiwan

This paper examines the hypothesis that the timing of lockup expiration is crucial to earnings management (EM) behavior in the period after an initial public offering (IPO). Taiwan's unique two-stage lockup regulations make the Taiwanese sample an excellent candidate for examining this hypothesis. Three main results are reached. First, we find positive discretionary accruals (DAs) from the IPO quarter to the quarter after the expiration of the first-stage lockup. The DA in the quarter of the second-stage lockup expiration is significantly positive. The evidence shows that the lockup provision is key in the findings of significant EM in the IPO year and the following year. We also find a positive association between DAs in first-stage lockups and subsequent insider selling activity, indicating that insiders' selling after lockup expiration accounts for EM in the lockup period. Third, the extent of EM in first-stage lockup is negatively related to that around the IPO, consistent with the reversal nature of DAs.     

Why do corporate managers misstate financial statements? The role of option compensation and other factors

We investigate the incentives that led to the rash of restated financial statements at the end of the 1990s market bubble. We find that the likelihood of a misstated financial statement increases greatly when the CEO has very sizable holdings of in-the-money stock options. Misstatements are also more likely for firms that are constrained by an interest-coverage debt covenant, that raise new debt or equity capital, or that have a CEO who serves as board chair. Our results indicate that agency costs increased [Jensen, M.C., 2005a, Agency costs of overvalued equity. Financial Management 34, 5–19] as substantially overvalued equity caused managers to take actions to support the stock price.     

The role of state and foreign owners in corporate risk-taking: Evidence from privatization

Using a unique database of 381 newly privatized firms from 57 countries, we investigate the impact of shareholders' identity on corporate risk-taking behavior. We find strong and robust evidence that state (foreign) ownership is negatively (positively) related to corporate risk-taking. Moreover, we find that high risk-taking by foreign owners depends on the strength of country-level governance institutions. Our results suggest that relinquishment of government control, openness to foreign investment, and improvement of country-level governance institutions are key determining factors of corporate risk-taking in newly privatized firms.     

CEO pay incentives and risk-taking: Evidence from bank acquisitions

We analyze how the structure of executive compensation affects the risk choices made by bank CEOs. For a sample of acquiring U.S. banks, we employ the Merton distance to default model to show that CEOs with higher pay-risk sensitivity engage in risk-inducing mergers. Our findings are driven by two types of acquisitions: acquisitions completed during the last decade (after bank deregulation had expanded banks' risk-taking opportunities) and acquisitions completed by the largest banks in our sample (where shareholders benefit from ‘too big to fail’ support by regulators and gain most from shifting risk to other stakeholders). Our results control for CEO pay-performance sensitivity and offer evidence consistent with a causal link between financial stability and the risk-taking incentives embedded in the executive compensation contracts at banks.     

Implications of power: When the CEO can pressure the CFO to bias reports

Building on archival, anecdotal, and survey evidence on managers? roles in accounting manipulations, I develop an agency model to examine the effects of a CEO?s power to pressure a CFO to bias a performance measure, like earnings. This power has implications for incentive compensation, reporting quality, firm value, and information rents. Predictions from the model provide potential explanations for the differing results from recent empirical studies on the impact of regulatory interventions like SOX and the extent to which the CEO?s or CFO?s incentives significantly impact on earnings management. The model also identifies conditions under which either a powerful or a non-powerful CEO can extract rents, which can help explain mixed empirical results on the association between CEO power and “excessive” compensation.     

Run EDGAR Run: SEC Dissemination in a High‐Frequency World

We describe the process through which the Securities and Exchange Commission (SEC) makes filings “publicly available.” For a sample of Form 4 (insider trade) filings, we show that, during the period we examine, the majority of filings are available to paying subscribers of the SEC's public dissemination system (PDS) feed before they are posted to the EDGAR website, and so provide subscribers and their clients with a private advantage. We show that this advantage translates into an economically significant trading advantage, and prices, volumes, and spreads respond to the news contained in filings beginning around 30 seconds before public posting. These findings indicate that the SEC dissemination process does not always provide a level playing field and that the meaning of publicly available information in capital markets is no longer simple or obvious. In response to our study, the SEC launched an investigation and agreed to eliminate the PDS timing advantage.     

Overpaid acquisitions and goodwill impairment losses — Evidence from the US

The purpose of this study is to shed light on the reliability of accounting goodwill numbers by examining whether many goodwill impairment losses arise from overpayment for the target at the time of the acquisition, rather than from a subsequent deterioration of goodwill values. A second related objective is to assess whether the goodwill impairment test introduced by SFAS 142 improved the ability of accounting standards to timely capture situations in which the amount of goodwill is overstated and should thus be written down.     

Governance and Performance Implications of Diversification Strategies: Evidence from Large U.S. Firms

Recent research focuses on explaining the diversification discount. However, there is little direct evidence regarding the relation among ownership structure, corporate governance, and corporate diversification. The results in this paper suggest that agency issues do not account for firms adopting a particular diversification strategy. Also, the performance consequences of the shift in the diversification strategy and the subsequent changes in institutional and block ownership structures are not related to agency issues. In fact, investors seem not to avoid diversified firms per se. We suggest that observed board and ownership differences between diversified and focused firms are due to their being at different stages of corporate evolution.     

The influence of governance on investment: Evidence from a hazard model

Does corporate governance affect the timing of large investment projects? Hazard model estimates suggest strong shareholder governance may deter managers from pursuing large investments. Controlling for investment opportunities, firms with good governance experience longer spells between large investments. However, in the presence of financial constraints or strong CEO incentives (high delta (δ)), we find no such timing differences. Finally, these higher investment hazard firms exhibit significantly negative long-run operating and stock performance. Overall, our findings are consistent with the notion that poor governance associates with overinvestment.     

Corporate social responsibility and stakeholder value maximization: Evidence from mergers

Using a large sample of mergers in the US, we examine whether corporate social responsibility (CSR) creates value for acquiring firms' shareholders. We find that compared with low CSR acquirers, high CSR acquirers realize higher merger announcement returns, higher announcement returns on the value-weighted portfolio of the acquirer and the target, and larger increases in post-merger long-term operating performance. They also realize positive long-term stock returns, suggesting that the market does not fully value the benefits of CSR immediately. In addition, we find that mergers by high CSR acquirers take less time to complete and are less likely to fail than mergers by low CSR acquirers. These results suggest that acquirers' social performance is an important determinant of merger performance and the probability of its completion, and they support the stakeholder value maximization view of stakeholder theory.     

Ownership structure,corporate governance and analyst following: A study of French listed firms

This study investigates the effects of some characteristics of the French corporate governance model – deemed to foster entrenchment and facilitate private benefits extraction – on the extent of analyst following. The results show that analysts are more likely to follow firms both with high discrepancy level between ownership and control and those controlled through pyramiding. These findings provide empirical support to the argument that minority shareholders value private information on firms with high expropriation likelihood, asking thence for more analyst services. Additional findings show that analysts are reticent to follow firms managed by controlling family members. This is, in part, explained by these firms’ reliance on private communication channels rather than public disclosure, producing a poor informational environment.     

内幕交易实时监控系统的构建——基于GARJI模型的实证研究

从信息抵达和动态跳跃特征的角度研究内幕交易的事中监管,构建了基于GAR JI模型的实时监控系统。从兼顾漏报和错报率的角度出发,提出了两档基于异常信息抵达概率和股价涨跌幅的内幕交易预警标准,保证了预警的功效。针对案例股票的模拟监控实验表明,该系统效果良好,适用于当前股市。     

Zombie Board: Board Tenure and Firm Performance

We show that board tenure exhibits an inverted U‐shaped relation with firm value and accounting performance. The quality of corporate decisions, such as M&A, financial reporting quality, and CEO compensation, also has a quadratic relation with board tenure. Our results are consistent with the interpretation that directors’ on‐the‐job learning improves firm value up to a threshold, at which point entrenchment dominates and firm performance suffers. To address endogeneity concerns, we use a sample of firms in which an outside director suffered a sudden death, and find that sudden deaths that move board tenure away from (toward) the empirically observed optimum level in the cross‐section are associated with negative (positive) announcement returns. The quality of corporate decisions also follows an inverted U‐shaped pattern in a sample of firms affected by the death of a director.     

Sooner or Later: An Analysis of the Delays in Insider Trading Reporting

Abstract:  Until October 2004, corporate insiders in Germany were required to report trades in the shares of their firm 'without delay'. Yet in practice, substantial reporting delays were common. We show that the delays are related systematically to the characteristics of the firm. Delays are longer in firms with dispersed ownership and in firms using German accounting standards. This suggests that managers of these firms are less responsive to the informational requirements of the capital market. We further find that abnormal returns after the reporting date of an insider trade are independent of the reporting delay. This implies that prices are distorted in the period between the insider trading and the reporting date. This is a strong point in favour of regulations that require and enforce the immediate disclosure of insider trades.